Tree schedule & plan overlay
Every tree on and adjoining the site identified, measured, and mapped against the proposed works.
Mandatory documentation for Development Applications
Arboricultural Impact Assessment (AIA) Reports
When construction affects trees, councils require an AIA. Our Level 5 reports calculate Tree Protection Zones per AS 4970:2025 and provide clear retention recommendations that planning authorities respect and approve.
AS 4970:2025Overview
An Arboricultural Impact Assessment is the technical document councils use to decide whether a development can proceed around existing trees. It must demonstrate, in measurable terms, how each retained tree will survive construction — and why any removal is justified.
We prepare AIA reports to AS 4970:2025 for residential, commercial, and infrastructure projects across the Central Coast and Western Sydney, with other NSW regions on request. Every report is written by our Level 5 arborist, personally, and structured so a planning officer can verify each conclusion without a second opinion.
What you receive
TPZ & SRZ calculations
Protection and structural root zones calculated to AS 4970:2025, with encroachment percentages assessed tree by tree.
Impact rating & justification
A defensible impact grade for each specimen, with the reasoning a consent authority needs to accept retention or removal.
Tree protection specification
Practical on-site measures — fencing, ground protection, supervision hold points — written for builders to follow.
Suited to
When this service applies
- Development Applications requiring council tree assessment
- Subdivisions and multi-dwelling residential projects
- Commercial and infrastructure works near retained trees
- Responses to council requests for additional information
Accredited & Assured
Independently accredited, industry recognised
Where we work
Level 5 consulting across NSW
Based on the Central Coast, we focus on two primary markets — the Central Coast and Western Sydney — with no travel charges inside our service areas. Newcastle, the Blue Mountains and wider Sydney are serviced on request.
Explore service areas
Central Coast
Western Sydney
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